1 | /* |
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2 | * raw_execption.h |
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3 | * |
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4 | * This file contains implementation of C function to |
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5 | * Instantiate 60x ppc primary exception entries. |
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6 | * More detailed information can be found on motorola |
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7 | * site and more precisely in the following book : |
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8 | * |
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9 | * MPC750 |
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10 | * Risc Microporcessor User's Manual |
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11 | * Mtorola REF : MPC750UM/AD 8/97 |
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12 | * |
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13 | * Copyright (C) 1999 Eric Valette (valette@crf.canon.fr) |
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14 | * Canon Centre Recherche France. |
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15 | * |
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16 | * Enhanced by Jay Kulpinski <jskulpin@eng01.gdds.com> |
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17 | * to support 603, 603e, 604, 604e exceptions |
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18 | * |
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19 | * The license and distribution terms for this file may be |
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20 | * found in found in the file LICENSE in this distribution or at |
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21 | * http://www.rtems.com/license/LICENSE. |
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22 | * |
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23 | * $Id$ |
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24 | */ |
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25 | |
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26 | #ifndef _LIBCPU_RAW_EXCEPTION_H |
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27 | #define _LIBCPU_RAW_EXCEPTION_H |
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28 | |
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29 | /* |
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30 | * Exception Vectors as defined in the MCP750 manual |
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31 | */ |
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32 | |
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33 | #define ASM_RESET_VECTOR 0x01 |
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34 | #define ASM_MACH_VECTOR 0x02 |
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35 | #define ASM_PROT_VECTOR 0x03 |
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36 | #define ASM_ISI_VECTOR 0x04 |
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37 | #define ASM_EXT_VECTOR 0x05 |
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38 | #define ASM_ALIGN_VECTOR 0x06 |
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39 | #define ASM_PROG_VECTOR 0x07 |
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40 | #define ASM_FLOAT_VECTOR 0x08 |
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41 | #define ASM_DEC_VECTOR 0x09 |
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42 | #define ASM_SYS_VECTOR 0x0C |
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43 | #define ASM_TRACE_VECTOR 0x0D |
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44 | #define ASM_PERFMON_VECTOR 0x0F |
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45 | #define ASM_IMISS_VECTOR 0x10 |
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46 | #define ASM_DLMISS_VECTOR 0x11 |
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47 | #define ASM_DSMISS_VECTOR 0x12 |
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48 | #define ASM_ADDR_VECTOR 0x13 |
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49 | #define ASM_SYSMGMT_VECTOR 0x14 |
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50 | #define ASM_ITM_VECTOR 0x17 |
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51 | #define LAST_VALID_EXC ASM_ITM_VECTOR |
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52 | |
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53 | /* |
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54 | * Vector offsets as defined in the MCP750 manual |
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55 | */ |
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56 | |
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57 | #define ASM_RESET_VECTOR_OFFSET (ASM_RESET_VECTOR << 8) |
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58 | #define ASM_MACH_VECTOR_OFFSET (ASM_MACH_VECTOR << 8) |
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59 | #define ASM_PROT_VECTOR_OFFSET (ASM_PROT_VECTOR << 8) |
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60 | #define ASM_ISI_VECTOR_OFFSET (ASM_ISI_VECTOR << 8) |
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61 | #define ASM_EXT_VECTOR_OFFSET (ASM_EXT_VECTOR << 8) |
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62 | #define ASM_ALIGN_VECTOR_OFFSET (ASM_ALIGN_VECTOR << 8) |
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63 | #define ASM_PROG_VECTOR_OFFSET (ASM_PROG_VECTOR << 8) |
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64 | #define ASM_FLOAT_VECTOR_OFFSET (ASM_FLOAT_VECTOR << 8) |
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65 | #define ASM_DEC_VECTOR_OFFSET (ASM_DEC_VECTOR << 8) |
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66 | #define ASM_SYS_VECTOR_OFFSET (ASM_SYS_VECTOR << 8) |
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67 | #define ASM_TRACE_VECTOR_OFFSET (ASM_TRACE_VECTOR << 8) |
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68 | #define ASM_ADDR_VECTOR_OFFSET (ASM_ADDR_VECTOR << 8) |
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69 | #define ASM_SYSMGMT_VECTOR_OFFSET (ASM_SYSMGMT_VECTOR << 8) |
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70 | #define ASM_ITM_VECTOR_OFFSET (ASM_ITM_VECTOR << 8) |
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71 | |
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72 | |
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73 | #ifndef ASM |
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74 | |
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75 | /* |
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76 | * Type definition for raw exceptions. |
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77 | */ |
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78 | |
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79 | typedef unsigned char rtems_vector; |
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80 | struct __rtems_raw_except_connect_data__; |
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81 | typedef void (*rtems_raw_except_func) (void); |
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82 | typedef unsigned char rtems_raw_except_hdl_size; |
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83 | |
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84 | typedef struct { |
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85 | rtems_vector vector; |
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86 | rtems_raw_except_func raw_hdl; |
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87 | rtems_raw_except_hdl_size raw_hdl_size; |
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88 | }rtems_raw_except_hdl; |
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89 | |
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90 | typedef void (*rtems_raw_except_enable) (const struct __rtems_raw_except_connect_data__*); |
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91 | typedef void (*rtems_raw_except_disable) (const struct __rtems_raw_except_connect_data__*); |
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92 | typedef int (*rtems_raw_except_is_enabled) (const struct __rtems_raw_except_connect_data__*); |
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93 | |
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94 | typedef struct __rtems_raw_except_connect_data__{ |
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95 | /* |
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96 | * Exception vector (As defined in the manual) |
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97 | */ |
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98 | rtems_vector exceptIndex; |
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99 | /* |
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100 | * Exception raw handler. See comment on handler properties below in function prototype. |
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101 | */ |
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102 | rtems_raw_except_hdl hdl; |
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103 | /* |
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104 | * function for enabling raw exceptions. In order to be consistent |
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105 | * with the fact that the raw connexion can defined in the |
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106 | * libcpu library, this library should have no knowledge of |
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107 | * board specific hardware to manage exceptions and thus the |
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108 | * "on" routine must enable the except at processor level only. |
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109 | * |
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110 | */ |
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111 | rtems_raw_except_enable on; |
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112 | /* |
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113 | * function for disabling raw exceptions. In order to be consistent |
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114 | * with the fact that the raw connexion can defined in the |
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115 | * libcpu library, this library should have no knowledge of |
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116 | * board specific hardware to manage exceptions and thus the |
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117 | * "on" routine must disable the except both at device and PIC level. |
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118 | * |
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119 | */ |
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120 | rtems_raw_except_disable off; |
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121 | /* |
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122 | * function enabling to know what exception may currently occur |
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123 | */ |
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124 | rtems_raw_except_is_enabled isOn; |
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125 | }rtems_raw_except_connect_data; |
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126 | |
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127 | typedef struct { |
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128 | /* |
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129 | * size of all the table fields (*Tbl) described below. |
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130 | */ |
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131 | unsigned int exceptSize; |
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132 | /* |
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133 | * Default handler used when disconnecting exceptions. |
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134 | */ |
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135 | rtems_raw_except_connect_data defaultRawEntry; |
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136 | /* |
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137 | * Table containing initials/current value. |
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138 | */ |
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139 | rtems_raw_except_connect_data* rawExceptHdlTbl; |
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140 | }rtems_raw_except_global_settings; |
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141 | |
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142 | /* |
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143 | * C callable function enabling to set up one raw idt entry |
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144 | */ |
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145 | extern int mpc60x_set_exception (const rtems_raw_except_connect_data*); |
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146 | |
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147 | /* |
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148 | * C callable function enabling to get one current raw idt entry |
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149 | */ |
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150 | extern int mpc60x_get_current_exception (rtems_raw_except_connect_data*); |
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151 | |
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152 | /* |
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153 | * C callable function enabling to remove one current raw idt entry |
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154 | */ |
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155 | extern int mpc60x_delete_exception (const rtems_raw_except_connect_data*); |
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156 | |
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157 | /* |
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158 | * C callable function enabling to check if vector is valid |
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159 | */ |
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160 | extern int mpc750_vector_is_valid(rtems_vector vector); |
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161 | |
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162 | /* |
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163 | * Exception global init. |
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164 | */ |
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165 | extern int mpc60x_init_exceptions (rtems_raw_except_global_settings* config); |
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166 | extern int mpc60x_get_exception_config (rtems_raw_except_global_settings** config); |
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167 | |
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168 | # endif /* ASM */ |
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169 | |
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170 | #endif |
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